Performance Analysis of the Migration of a 400 Gb/S-NRZ Optical Ring to a 1.6 Tb/S-PAM4 Ring

Andrés Veloz Domínguez, Germán V. Arévalo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we aim to demonstrate the feasibility of upgrading the CELEC EP 40 channel, 400 Gb/s, NRZ, DWDM ring, using PAM-4 modulation with the same 40 channels transmitting each at 40 Gb/s, for achieving a total capacity of 1.6 Tb/s. To overcome the problem related to the dispersion sensitivity of PAM-4 in long-distance links, we employed a dual technique of compensation, in the optical and electrical domain, based on dispersion-compensating fibers and in electrical pre-distortion of the PAM-4 signal. Simulation results show that the upgrade to 1.6 Tb/s is feasible using low-complexity changes in the current infrastructure. In the shorter links of the ring, it is enough the use of optical dispersion compensation, and a BER = 10-9 is achievable with an optical received power of about −19 dBm, whilst in the longest links, the electronic pre-distortion is mandatory for avoiding a penalization of about 3 dB for getting the same goal BER if the pre-distortion is not used. We validated the simulations with a comparison with experimental results for the longest link, 165 km, of the ring. Experimental and simulations results show nearly de same values of non-pre-distortion penalty and receiver sensitivity, for achieving the same goal BER.

Original languageEnglish
Title of host publicationInformation and Communication Technologies - 8th Conference, TICEC 2020, Proceedings
EditorsGermania Rodriguez Morales, Efraín R. Fonseca C., Juan Pablo Salgado, Pablo Pérez-Gosende, Marcos Orellana Cordero, Santiago Berrezueta
PublisherSpringer Science and Business Media Deutschland GmbH
Pages468-478
Number of pages11
ISBN (Print)9783030628321
DOIs
StatePublished - 2020
Event8th Conference on Information and Communication Technologies of Ecuador, TICEC 2020 - Guayaquil, Ecuador
Duration: 25 Nov 202027 Nov 2020

Publication series

NameCommunications in Computer and Information Science
Volume1307
ISSN (Print)1865-0929
ISSN (Electronic)1865-0937

Conference

Conference8th Conference on Information and Communication Technologies of Ecuador, TICEC 2020
Country/TerritoryEcuador
CityGuayaquil
Period25/11/2027/11/20

Bibliographical note

Funding Information:
Acknowledgment. A. Veloz and G. Arévalo thank the funding for making this research given by the Telecommunications Research Group (GIETEC) of Universidad Politécnica Salesiana.

Funding Information:
Funded by the Telecommunications Research Group (GIETEC) of Universidad Politécnica Salesiana and supported by the Engineering Faculty of Pontificia Universidad Católica del Ecuador.

Funding Information:
A. Veloz and G. Ar?valo thank the funding for making this research given by the Telecommunications Research Group (GIETEC) of Universidad Polit?cnica Salesiana.

Publisher Copyright:
© 2020, Springer Nature Switzerland AG.

Keywords

  • Dispersion compensation
  • DWDM
  • Gray coding
  • Optical ring
  • PAM-4
  • Pre-distortion

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